build: Rework patch mechanism for Fuel submodules

While refactoring the patching mechanism, take care of:
- Sync submodule handling with Fuel@OPFNV;
- build: Investigate/prepare for moving patches to Fuel@OPNFV;
- build: Investigate divergent fuel-mirror;
- ISO build: cacheid for Fuel comps should not depend on
  Armband git commit;

CHANGE:
 Rename/shuffle patches while grouping them in "features",
 preparing for upstreaming them to Fuel@OPNFV and beyond.

CHANGE:
 Allow linking patches for better representing the dependency
 between one patch and different features.
 e.g. 0001-Add-arch-to-nailgun-release-and-target-image.patch:
   - part of `multiarch-fuel`, because it extends Fuel;
   - part of `direct-kernel-boot`, as arch is required for that;
   - part of `cross-bootstrap`, target image is arch-dependent;
 NOTE: Patch links are not staged to Fuel@OPNFV, they only serve
 as markers that a specific patch is part of a feature.

CHANGE:
 Kill all Fuel component submodules, now handled in Fuel@OPNFV:
  - fuel-agent
  - fuel-astute
  - fuel-library
  - fuel-mirror
  - fuel-nailgun-agent
  - fuel-web

CHANGE:
 Move armband-fuel-config.mk to armband git root.

FIXME: m1.micro-Increase-profile-RAM-size-to-128MB.patch is NOT
 part of `cross-bootstrap` feature, but patch context says so ...

FIXME: 0001-Add-arm64-deb-repositories-setup.patch is broken at
 `make patches-export` by removing spaces at EOL.

v2 -> v3:
 * Phony patch support (links to show a patch belongs to a feature);
 * Updated README.md
v3 -> v7:
 * Re-export Fuel submodules & plugins patches (update patch context);
 * Update Cavium mail addresses (s/caviumnetworks.com/cavium.com/);
 * Ignore submodule changes;
 * Add armband git repo info to gitinfo_fuel.txt at build time;

Implements: ARMBAND-136
Closes-bug: ARMBAND-95
Closes-bug: ARMBAND-93
Closes-bug: ARMBAND-92

Change-Id: I1a236d9f43b2e6dca22055911f696b43c22b5973
Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

2 files changed, 6 insertions, 6 deletions

diff --git a/patches/fuel-mirror/0001-Set-mos-ubuntu-base-URL-to-linux.enea.com.patch b/patches/fuel-mirror/0001-Set-mos-ubuntu-base-URL-to-linux.enea.com.patch
index a12c4143..9d45cda1 100644
--- a/patches/fuel-mirror/0001-Set-mos-ubuntu-base-URL-to-linux.enea.com.patch
+++ b/patches/fuel-mirror/0001-Set-mos-ubuntu-base-URL-to-linux.enea.com.patch
@@ -8,7 +8,7 @@ Contents of amd64 mos-ubuntu repos should be in sync with arm64.
  1 file changed, 1 insertion(+), 1 deletion(-)
 
 diff --git a/contrib/fuel_mirror/data/ubuntu.yaml b/contrib/fuel_mirror/data/ubuntu.yaml
-index 5ce288e..7bc0c4b 100644
+index ac62455..cd86ec9 100644
 --- a/contrib/fuel_mirror/data/ubuntu.yaml
 +++ b/contrib/fuel_mirror/data/ubuntu.yaml
 @@ -1,6 +1,6 @@
@@ -16,6 +16,6 @@ index 5ce288e..7bc0c4b 100644
  ubuntu_baseurl: &ubuntu_baseurl http://archive.ubuntu.com/ubuntu
 -mos_baseurl: &mos_baseurl http://mirror.fuel-infra.org/mos-repos/ubuntu/$mos_version
 +mos_baseurl: &mos_baseurl http://linux.enea.com/mos-repos/ubuntu/$mos_version
- 
+
  fuel_release_match:
     version: $openstack_version
diff --git a/patches/fuel-mirror/0003-kernel-flavor-Add-linux-image-generic-lts-xenial.patch b/patches/fuel-mirror/kernel-bump/0001-kernel-flavor-Add-linux-image-generic-lts-xenial.patch
index 6be21dac..35f356d6 100644
--- a/patches/fuel-mirror/0003-kernel-flavor-Add-linux-image-generic-lts-xenial.patch
+++ b/patches/fuel-mirror/kernel-bump/0001-kernel-flavor-Add-linux-image-generic-lts-xenial.patch
@@ -8,14 +8,14 @@ Ubuntu arm64: While keeping kernel 4.2 for Trusty
 
 Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
 ---
- contrib/fuel_mirror/data/ubuntu.yaml | 4 ++--
- 1 file changed, 2 insertions(+), 2 deletions(-)
+ contrib/fuel_mirror/data/ubuntu.yaml | 2 ++
+ 1 file changed, 2 insertions(+)
 
 diff --git a/contrib/fuel_mirror/data/ubuntu.yaml b/contrib/fuel_mirror/data/ubuntu.yaml
-index 2ec4f1d..b8c0ae4 100644
+index 2ec4f1d..6805847 100644
 --- a/contrib/fuel_mirror/data/ubuntu.yaml
 +++ b/contrib/fuel_mirror/data/ubuntu.yaml
-@@ -98,6 +98,8 @@ packages: &packages
+@@ -100,6 +100,8 @@ packages: &packages
       - "linux-firmware-nonfree"
       - "linux-headers-generic-lts-trusty"
       - "linux-image-generic-lts-trusty"